The Simple Mail Transfer Protocol ( SMTP) is an internet standard communication protocol for electronic mail transmission. Mail servers and other message transfer agents use SMTP to send and receive mail messages. User-level email clients typically use SMTP only for sending messages to a mail server for relaying, and typically submit outgoing ...
Introduction to Simple Mail Transfer Protocol (SMTP) The SMTP protocol is a Simple Mail Transfer Protocol that defines both MTA (Mail Transfer Agent) client to send mail and MTA (Mail Transfer Agent) server to receive the mail. SMTP simply defines how data or commands transfer from client to server or server to client, used two times between the sender and sender’s mail server and between two mail servers.
SMTP is part of the application layer of the TCP/IP protocol. Using a process called “store and forward,” SMTP moves your email on and across networks. It works closely with something called the Mail Transfer Agent (MTA) to send your communication to the right computer and email inbox.
Definition and basics. If you think of e-mail as electronic mail, then SMTP is the mail man. Without the internet’s standard network protocol, sending applications documents, e-cards, and funny cat videos wouldn’t be possible at all. This is because when you send an e-mail, it doesn’t simply travel directly to the recipient, but goes through a complex communication process with numerous instances before it reaches its destination.
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SMTP is an Internet standard for sending emails on the internet. If you feel adventurous and you want to actually read the specifications of the protocol, the original specifications for SMTP were published under RFC 821 in 1982. And later on, more specifications were introduced under RFC 5321.
Most internet systems use SMTP as a method to transfer mail from one user to another. SMTP is a push protocol and is used to send the mail whereas POP (post office protocol) or IMAP (internet message access protocol) are used to retrieve those mails at the receiver’s side. SMTP Fundamentals. SMTP is an application layer protocol.
mail over the Internet use simple mail transfer protocol (SMTP) to send messages from one server to another. The messages can then be retrieved with an e-mail client us-ing either post ofﬁce protocol (POP) or Internet message access protocol (IMAP). SMTP is also generally used to send messages from a mail client to a mail server in “host-
Where SMTP protocol is used? Stands for “Simple Mail Transfer Protocol.” This is the protocol used for sending e-mail over the Internet. Your e-mail client (such as Outlook, Eudora, or Mac OS X Mail) uses SMTP to send a message to the mail server, and the mail server uses SMTP to relay that message to the correct receiving mail server.